Back & Vertebral Anatomy Flashcards
The superficial muscles of the back are innervated by? What is their primary function?
ventral rami
move upper limb
The deep muscles of the back are innervated by? What is their primary function?
dorsal rami
maintain posture
(attach on transverse and spinous processes of vertebrae)
what is the function of ventral root fibers?
motor
what is the function of dorsal root fibers?
sensory
Which nerve fibers do motor and sensory innervation?
dorsal rami, ventral rami, spinal nerves
review the cross section of spinal nerve
slide 200
where are the cell bodies for the efferent fibers?
spinal cord GREY matter
where are the cell bodies for afferent fibers?
dorsal root ganglion
How many vertebrae in each spinal cord section?
7 C
12 T
5 L
5 S (fused)
4 C (fused)
go over the parts of the vertebrae
slide 208
go over parts of the sacrum
slide 210
What is special about the boney landmarks on C1?
it does not have a spinous process, instead it has a posterior tubercle
What is special about the boney landmarks on C2?
it has a dens that allows the head to rotate in a ‘no’ direction
What is anulus fibrosis?
criss cross section on fibrous CT that encloses the intervertebral discs allowing greater strength
what is the nucleus pulposus?
inner watery or gel like part of intervertebral disc
What can occur with intervertebral disc herniation?
the gel that is in the disc begins to seep out causing compression of the spinal nerves
what is the zygapophyseal joint?
joint connecting the superior and inferior facets
what is the difference between a hemorrhagic and ischemic CVA?
hemorrhagic ruptures, ischemic blocks
How can you identify a stroke?
FAST
F face drooping
A arm weakness
S speech difficult
T time to call 911
go over the location of the spinal ligaments
233
what is special about the ligamentum flavum?
high elastic fiber content making it yellowish in color
what is a lumbar puncture? Why lumbar?
sticking a needle into the spine to get CSF to test, bc that is where cuadia equina is, safer to puncture there than spinal cord
what is the order from superficial to deep of structures passed through during a spinal tap?
Skin
subcutaneous ligament
supraspinatus ligament
interspinous ligament
ligamentum flavum
epidural space
Dural space
arachnoid matter (where CSF is)
